forty = 40
four, fourteen, but no 'u' in forty
Add a hyphen in forty-one, forty-two, forty-four, etc
Change the 'y' to 'i' forty — fortieth (40th)
Change the 'y' to 'ies' in forty — forties (40s)
But fortyish

how to Spell 'definitely'

Which is the correct spelling? The trouble with these multiple choice quizzes is you think you know the spelling then they throw in a spelling that looks so right, but by using memory tricks and strategies you can pick the correct one.
a. definately
b. definetely
c. definitely
d. definitly